Houston’s explosive growth, combined with our humid, warm climate, has made rodents a persistent threat. In recent 2025 reports, Houston ranked 7th nationally in Terminix’s State of the Rodent Report (with Texas seeing a 23% increase in calls) and around 23rd in Orkin’s Rattiest Cities list (up +2 spots). Terminix noted long hot summers, residential shifts, and new development as key drivers, while Orkin highlighted urban infrastructure and weather patterns fueling activity.
Common species here include Norway rats (Rattus norvegicus), roof rats (Rattus rattus), and house mice (Mus musculus). According to the Mallis Handbook of Pest Control (a leading industry reference with detailed chapters on rodents), Norway rats prefer ground-level burrows near water sources, roof rats climb and nest in attics/trees, and house mice squeeze through tiny gaps (as small as 1/4 inch).

Biology and Life Cycle (Mallis Insights): Rodents breed rapidly— a single pair of Norway rats can produce up to 2,000 descendants in a year under ideal conditions. Females gestate 21–23 days, litters average 6–12 pups, and they reach maturity in 2–3 months. In Houston’s mild winters, breeding continues year-round, unlike colder climates.
Health and Property Risks: Rodents transmit diseases like hantavirus (via deer mouse droppings, though rare in urban Houston), salmonellosis, leptospirosis, and rat-bite fever. They contaminate food with urine/feces, chew electrical wires (causing fires), and gnaw structures (costing billions nationally). TDA guidelines stress that unlicensed rodent control can worsen risks—always use licensed pros for safe baiting/exclusion.

TDA/SPCS Guidelines for Texas: The Texas Department of Agriculture requires licensed Structural Pest Control Applicators for rodent work. IPM is emphasized: monitor, identify, exclude, then treat minimally. Avoid broad poisons without root-cause fixes.
Detailed Prevention and Control Tips for Houston Homeowners:
Inspection and Monitoring — Check for droppings (Norway: blunt ends; mice: pointed), gnaw marks, rub marks (greasy along walls), nests, and entry points. Use blacklight for urine trails.
Exclusion (Primary IPM Step) — Seal gaps with steel wool/caulk (mice through dime-sized; rats quarter-sized). Install door sweeps, screen vents, cap chimneys. Mallis recommends metal flashing for pipes/wires.
Sanitation — Store food in metal/glass containers, clean crumbs daily, fix leaks (rodents need ~1 oz water/day), secure trash with tight lids. Remove outdoor debris/wood piles.
Yard and Landscape Management — Trim vegetation 18+ inches from home, elevate firewood, avoid mulch against foundations. TDA notes conducive conditions like moisture attract rodents.
Trapping and Baiting — Snap traps for small issues; multi-catch for mice. For baiting, use tamper-resistant stations per TDA rules—never scatter poison openly.
Professional Intervention — DIY often fails long-term due to hidden populations. At APE, we use IPM: thorough inspection, exclusion, targeted treatments, and follow-ups. With my 12+ years and termite license, I focus on preventing re-entry.
Rodent issues escalate quickly—don’t wait. Contact Apex Pest Extermination for a free inspection and customized plan.
Schedule Rodent Inspection – Protect Your Houston Home Today
832-310-5187